Class: PREP::Core::Label

Inherits:
Drawable show all
Defined in:
lib/core/label.rb

Overview

文字列描画構成要素クラス

Constant Summary collapse

ALIGNS = 
{
  :left    => HPDFDoc::HPDF_TALIGN_LEFT,
  :right   => HPDFDoc::HPDF_TALIGN_RIGHT,
  :center  => HPDFDoc::HPDF_TALIGN_CENTER,
  :justify => HPDFDoc::HPDF_TALIGN_JUSTIFY,
}
@@default_values = 
{
  :align => "left",
  :font => "MS-Mincyo",
  :size => 12,
  :color => { :red => 0, :green => 0, :blue => 0 },
  :layer => 3,
  :expand => false,
}

Instance Attribute Summary collapse

Attributes inherited from Drawable

#identifier, #layer

Instance Method Summary collapse

Methods inherited from Drawable

#<=>, #calculate_pos, #key_string_to_symbol, #rewind_current_page, #visible?

Constructor Details

#initialize(identifier, values = { }) ⇒ Label

Returns a new instance of Label.



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# File 'lib/core/label.rb', line 35

def initialize(identifier, values = { })
  values = @@default_values.merge(key_string_to_symbol(values))
  super(identifier, values[:layer])

  @region = Region.new(values[:region][:x].mm2pixcel,
                       values[:region][:y].mm2pixcel,
                       values[:region][:width].mm2pixcel,
                       values[:region][:height].mm2pixcel)
  if values[:label].nil?
    raise "Label string cannot be blank for \"#{identifier}\""
  else
    @label = values[:label]
  end

  if ALIGNS.keys.include?(values[:align].to_sym)
    @align = ALIGNS[values[:align].to_sym]
  else
    raise "Unknown label alignment option \"#{values[:align]}\"."
  end
  if values[:font].nil? || values[:font] == ""
    raise "Lable font must be specified."
  else
    @font = values[:font]
  end
  @color = Color.new(values[:color][:red],
                     values[:color][:green],
                     values[:color][:blue])
  if values[:size].nil? || values[:size] == ""
    raise "Label size must be specified."
  else
    @size = values[:size]
  end
  @expand = values[:expand]
end

Instance Attribute Details

#align ⇒ Object (readonly)

Returns the value of attribute align.



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# File 'lib/core/label.rb', line 33

def align
  @align
end

#color ⇒ Object (readonly)

Returns the value of attribute color.



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# File 'lib/core/label.rb', line 33

def color
  @color
end

#expand ⇒ Object (readonly)

Returns the value of attribute expand.



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# File 'lib/core/label.rb', line 33

def expand
  @expand
end

#font ⇒ Object (readonly)

Returns the value of attribute font.



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# File 'lib/core/label.rb', line 33

def font
  @font
end

#label ⇒ Object (readonly)

Returns the value of attribute label.



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# File 'lib/core/label.rb', line 33

def label
  @label
end

#region ⇒ Object (readonly)

Returns the value of attribute region.



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# File 'lib/core/label.rb', line 33

def region
  @region
end

#size ⇒ Object (readonly)

Returns the value of attribute size.



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# File 'lib/core/label.rb', line 33

def size
  @size
end

Instance Method Details

#calculate_region(prep, region, value, stop_on_drawable = nil) ⇒ Object

幅と高さを返却



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# File 'lib/core/label.rb', line 77

def calculate_region(prep, region, value, stop_on_drawable = nil)
  if self === stop_on_drawable
    raise ReRenderJump.new(region)
  end
  puts "Calculate region for #{self.class}: #{self.identifier} region: #{region}" if ENV["DEBUG"]
  ret_region = Region.new(0, 0,
                          region.width - (@region.x + @region.width),
                          region.height - (@region.y + @region.height))
  return @region.x + @region.width, @region.y + @region.height
end

#draw(prep, region, value, stop_on_drawable = nil) ⇒ Object

指定された領域を元に再計算して描画を実施



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# File 'lib/core/label.rb', line 89

def draw(prep, region, value, stop_on_drawable = nil)
  if self === stop_on_drawable
    raise ReRenderJump.new(region)
  end
  STDERR.puts("Draw on #{self.class} #{self.identifier}") if ENV['DEBUG']
  # 領域判定
  calculate_region(prep, region, value)
  # 文字列指定があるかを確認
  if value.nil? || value.to_s == ""
    string = self.label.dup
  else
    string = value.to_s
  end
  # 文字列指定に変数がある場合は判定
  string.gsub!("[[[current_page_number]]]", prep.current_page_number.to_s)
  string.gsub!("[[[total_page_count]]]", prep.total_pages.to_s)
  # 文字列の描画
  font = prep.pdf.get_font(self.font, "90ms-RKSJ-H")
  prep.current_page.begin_text
  prep.current_page.set_rgb_fill(@color.red.to_f, @color.green.to_f, @color.blue.to_f)
  region_backup = @region.dup
  if @expand_region
    @region = @expand_region.dup
    @expand_region = nil
  end
  left, top = calculate_pos(prep.current_page, region, @region.x, @region.y)
  right, bottom = left + @region.width, top - @region.height
  prep.current_page.set_font_and_size(font, @size)
  prep.current_page.text_rect(left, top, right, bottom,
                              NKF.nkf("--oc=cp932 -W8", string), @align)
  prep.current_page.end_text
  @region = region_backup
  prep.current_page.drawed = true
end

#expand_region(setting) ⇒ Object 



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# File 'lib/core/label.rb', line 70

def expand_region(setting)
  @expand_region = @region.dup
  @expand_region.width = setting[:width] if setting[:width]
  @expand_region.height = setting[:height] if setting[:height]
end